Validator and XHTML 1.1

Dear all, 

as of today, the validator is unable to validate XHTML 1.1 files created
with Amaya. Is there a plan to fix this? 

Furthermore, to link stylesheets, Amaya uses:

<link xmlns:xlink="http://www.w3.org/1999/xlink"
  href="/TR/W3C-WD.css" rel="stylesheet"
	type="text/css" />

The validator response that this is invalid. Are there plans to fix
this? Are there plans to synchronize with the Amaya-folks so that
Amaya produces valid results or that the validator can evaluate output
from Amaya?

Best, 

Rigo